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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <gtest/gtest.h>
#include <yoga/Yoga.h>
TEST(YogaTest, scale_change_invalidates_layout) {
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
YGConfigSetPointScaleFactor(config, 1.0f);
YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
YGNodeStyleSetWidth(root, 50);
YGNodeStyleSetHeight(root, 50);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child0, 1);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child1 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child1, 1);
YGNodeInsertChild(root, root_child1, 1);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child1));
YGConfigSetPointScaleFactor(config, 1.5f);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
// Left should change due to pixel alignment of new scale factor
ASSERT_FLOAT_EQ(25.333334f, YGNodeLayoutGetLeft(root_child1));
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, errata_config_change_relayout) {
YGConfig* config = YGConfigNew();
YGConfigSetErrata(config, YGErrataStretchFlexBasis);
YGNodeRef root = YGNodeNewWithConfig(config);
YGNodeStyleSetWidth(root, 500);
YGNodeStyleSetHeight(root, 500);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetAlignItems(root_child0, YGAlignFlexStart);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child0_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child0_child0, 1);
YGNodeStyleSetFlexShrink(root_child0_child0, 1);
YGNodeInsertChild(root_child0, root_child0_child0, 0);
YGNodeRef root_child0_child0_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child0_child0_child0, 1);
YGNodeStyleSetFlexShrink(root_child0_child0_child0, 1);
YGNodeInsertChild(root_child0_child0, root_child0_child0_child0, 0);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetWidth(root));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetHeight(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetWidth(root_child0));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(root_child0_child0));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetHeight(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(root_child0_child0_child0));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetHeight(root_child0_child0_child0));
YGConfigSetErrata(config, YGErrataNone);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetWidth(root));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetHeight(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_FLOAT_EQ(500, YGNodeLayoutGetWidth(root_child0));
// This should be modified by the lack of the errata
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(root_child0_child0));
// This should be modified by the lack of the errata
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetHeight(root_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(root_child0_child0_child0));
// This should be modified by the lack of the errata
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetHeight(root_child0_child0_child0));
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, setting_compatible_config_maintains_layout_cache) {
static uint32_t measureCallCount = 0;
auto measureCustom = [](YGNodeConstRef /*node*/,
float /*width*/,
YGMeasureMode /*widthMode*/,
float /*height*/,
YGMeasureMode /*heightMode*/) {
measureCallCount++;
return YGSize{
.width = 25.0f,
.height = 25.0f,
};
};
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
YGConfigSetPointScaleFactor(config, 1.0f);
YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
YGNodeStyleSetWidth(root, 50);
YGNodeStyleSetHeight(root, 50);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
EXPECT_EQ(0, measureCallCount);
YGNodeSetMeasureFunc(root_child0, measureCustom);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child1 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child1, 1);
YGNodeInsertChild(root, root_child1, 1);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
EXPECT_EQ(1, measureCallCount);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child1));
YGConfigRef config2 = YGConfigNew();
// Calling YGConfigSetPointScaleFactor multiple times, ensures that config2
// gets a different config version that config1
YGConfigSetPointScaleFactor(config2, 1.0f);
YGConfigSetPointScaleFactor(config2, 1.5f);
YGConfigSetPointScaleFactor(config2, 1.0f);
YGNodeSetConfig(root, config2);
YGNodeSetConfig(root_child0, config2);
YGNodeSetConfig(root_child1, config2);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
// Measure should not be called again, as layout should have been cached since
// config is functionally the same as before
EXPECT_EQ(1, measureCallCount);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child1));
YGNodeFreeRecursive(root);
YGConfigFree(config);
YGConfigFree(config2);
}
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